improved README.md
improved README.md

msteinbeck/tinyspline,retuxx/tinyspline,pellaeon/tinyspline-example,pellaeon/tinyspline-example,arneboe/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,arneboe/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,msteinbeck/tinyspline,retuxx/tinyspline,retuxx/tinyspline,msteinbeck/tinyspline